On Friday, Stewart was asked during a talkback event with Variety at the Sundance Film Festival what she thought about Trump’s tweets, now that he’s the president.

“He was mad at me a couple years ago, really obsessed with me a couple years ago, which is fucking crazy,” said Stewart, who was in town to promote her short film, “Come Swim.” “I can’t even understand it. I literally cannot even understand it. It’s such far-out concept that I don’t want to believe that actually is happening. It’s insane.”

At the time, Stewart said she dismissed Trump’s tweets because he was a “reality star.” But now she sees his social media obsession with her as much more troubling.

“At that point, he was just, like, a reality star. I had no reference. It wasn’t like really a thing,” Stewart added. “But in retrospect, somebody reminded me of that and I was like, ‘Oh my gosh, you’re right!’ He’s probably, like, going to tweet about this.”